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Liquid laundry detergent compositions with improved stability and transparency

a technology of liquid laundry detergent and composition, applied in the direction of detergent compounding agents, liquid soaps, non-ionic surface active compounds, etc., can solve the problems of product hazy and unstable, limit the selection of active ingredients, and reduce product acceptance by users

Inactive Publication Date: 2006-10-19
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Often modification of one ingredient such a composition causes a haze or cloudiness and results in a decreased product acceptance by the users.
This haziness / is believed to be caused by a complex interplay of the many functional additives in such a composition and thus limit selection of active ingredients that can enhance performance of the liquid detergent composition.
Prediction of stability and clarity relies on empirical experimentation, which may be altered with the addition of performance enhancers causing the product to become hazy and unstable and even causing phase separation.
Materials other than surfactants which can improve greasy and oil soil cleaning are polymeric materials, however effective formulation and stability of liquid detergent compositions with some polymeric materials further cause undesired clarity and transparency.
However, alkyl ethoxy sulfate surfactants and nonionic surfactants are more hydrophilic than LAS surfactants, thus reduction of LAS level in the composition may make hydrophobic soils such as grease and oil soils more difficult to remove.

Method used

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  • Liquid laundry detergent compositions with improved stability and transparency
  • Liquid laundry detergent compositions with improved stability and transparency
  • Liquid laundry detergent compositions with improved stability and transparency

Examples

Experimental program
Comparison scheme
Effect test

example 1

Polyethyleneimine (Backbone Molecular Weight 5000) Hereinafter PEI 5000 with 7 Exthoxy Moieties (EO) per Nitrogen of the Polyethyleneiminie Backbone (NH)

a) Treatment of PEI 5000 with 1 EO / NH

[0069] Heat to 80° C. in a 2 L reactor 900 g of a 50 wt % aqueous solution of PEI 5000 (backbone molecular weight 5000) and strip with nitrogen thrice (until a pressure of 500 kPa (5 bar) is obtained). Increase the temperature to 90° C. and add 461 g ethylene oxide until pressure rises to 500 kPa (5 bar). Remove the volatile components after 2 hours by stripping with nitrogen at 80° C. or vacuum of 50 kPa (500 mbar) at 80° C. Collect 1345 g of a 68% aqueous solution, which contains PEI 5000 with 1 EO / NH

b) Alkoxylation in the Presence of a Solvent

[0070] Treat in a 2 l reactor 362 g of a 68.5% aqueous solution from step (a) with 31 g of 40% aqueous solution of potassium hydroxide and 300 g xylene and and strip with nitrogen thrice (until a pressure of 500 kPa (5 bar) is obtained). Remove wate...

example 2

Polyethyleneimine (Backbone Molecular Weight 5000) Hereinafter PEI 5000 with 10 Exthoxy Moieties (EO) and 7 Propoxy Moieties (PO) per Nitrogen of the Polyethyleneiminie Backbone (NH)

a) Treatment of PEI 5000 with 1 EO / NH as in Example 1.

b) Alkoxylation

[0071] Treat in a 2 l reactor 163 g of a 68.4% the aqueous solution from step (a) with 13.9 g of 40% an aqueous solution of potassium hydroxide, heat to 70° C. and strip with nitrogen thrice (until a pressure of 500 kPa (5 bar) is obtained). Remove water during a 4 hour time period at 120° C. and vacuum of 1 kPa (10 mbar). Add 506 g ethylene oxide at 120° C. until pressure of 800 kPa (8 bar) is obtained. Stir for 4 hours at 120° C. Strip with nitrogent 120° C. Add 519 g propylene oxide at 120° C. until pressure of 800 kPa (8 bar) is obtained. Stir for 4 hours at 102° C. Remove volatile components by stripping with nitrogen at 80° C. or vacuum of 50 kPa (500 mbar) at 80° C. Collect 1178 g of a bright brownish viscous liquid (amine t...

example 3

Polyethyleneimine (Backbone Molecular Weight 5000) Hereinafter PEI5000 with 10 Exthoxy Moieties (EO) and 7 Propoxy Moieties (PO) per Nitrogen of the Polyethyleneiminie Backbone (NH) with 22% Quaternization

Prepare PEI 5000 EO10 PO7 as Shown in the Example 2

a) Quaternization

[0073] 300 g of PEI5000-10 EO / NH-7 PO / NH (example 2) under nitrogen atmosphere were heated to 60° C. Subsequent 7.3 g dimethyl sulfate were dropwise added. Temperature rose to 70° C. and the mixture was stirred for 3 h. Reduction of amine titer (from 0.9672 mmol / g to 0.7514 mmol / g) showed a quaternation of 22% of N. 307 g of a brownish, viscous liquid are received, which is PEI 5000-(10 EO-7 PO) / NH-22% quatted.

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Abstract

An improved method for predicting stability of liquid detergent composition, identifying and designing liquid detergent compositions that provide said desired stability, consumer acceptance and performance.

Description

CROSS REFERENCE TO RELATED APPLICATION [0001] This application claims benefit of and priority to U.S. Provisional Ser. No. 60 / 671,670 filed Apr. 15, 2005.FIELD OF THE INVENTION [0002] The present invention relates to an improved method for predicting stability of liquid detergent composition and / or identifying and designing liquid detergent compositions that provide said desired stability and / or consumer acceptance and / or performance. Present invention also relates to liquid detergent compositions having desired formulation tolerance and consisting of surfactants, polymers, alkoxylated polyethyleneimines, enzymes, hydrotropes, solvents, stabilizers, perfumes, colorants, builders, electrolytes, and other adjunct ingredients. BACKGROUND OF THE INVENTION [0003] A clear and transparent liquid detergent composition that provides maximum performance benefits when laundering fabrics continue to be desired by users of such compositions. Often modification of one ingredient such a compositio...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C11D17/00
CPCC11D1/22C11D1/29C11D1/37C11D1/83C11D3/38663C11D3/10C11D3/2075C11D3/3723C11D3/386C11D3/046
Inventor SCHNEIDERMAN, EVAWENNING, GENEVIEVE CAGALAWANTEYSSIER, PEGGY MARIONNASSANO, DAVID ROBERTROLLINS, DAVID KENTWIEDEMANN, DONNA JANECASADO-DOMINGUEZ, ARTURO LUISPANANDIKER, RAJAN KESHEV
Owner THE PROCTER & GAMBLE COMPANY
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